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Originally Posted by iambujo
FYI - I just tested our Hall Latch sensor with a ring magnet on a Fisher Price 00801-0673 motor shaft. I got the motor up to max free speed (12V from a bench supply), and the sensor read 20220 RPMs
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How were you decoding the sensor signal?
e.g. did you have the FPGA setup to measure rising edges only, or both rising and falling?
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The duty cycle was about 45% regardless of the motor speed so I figure that's based on the ring magnet's pole alignment.
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Most likely. Were you able to measure any jitter using the logic analyzer?
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I feel the US1881 is an excellent device for measuring wheel/shooter/shaft speeds at pretty much any speed we could ever want.
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Indeed